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P. GLOSS & J. A. HEARN.

POCKET MEMORANDUM AND OTHER BOOKS WITH DETAGHABLB COVERS.

Patented Oct. 11,1887.

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UNITED STATES PATENT GrErcE.

PETER GLOSS, OF GAMBRIDGEPORT, AND JAMES A. HEARN, OF BOSTON, MASSACHUSETTS; SAID GLOSS AND HEARN ASSIGNORS TO SAID JAMES A. HE ARN.

POCKET MEMORANDUM OR OTHER BOOK WITH DETACHABLE COVER.

SPECIFICATION forming part of Letters Patent No 371,425, dated October 11, 1857.

Application filed May 2, 1887. Serial No. 236.875.

T all whom it may concern:

Be it known that we, PETER GLOSS, ot' Gambridgeport, in the county of Middlesex and State of Massachusetts, and J AMES A. HEARN,

of Boston, in the county of Suffolk and State aforesaid, have invented certain Improvements in Pocket Memorand u m an d other Books having Detachable Covers, of which the following is a full, clear, and exact description,

to reference being bad to the accompanying drawings, making part of this specification, in which- Figure 1 is a perspective view of one of our improved books,the pack ofleaves being made 1 up in the form of a block and perforated to adapt them to be torn off singly when desired. Fig. 2 isalongitudinal vertical section through the same, enlarged. Fig. 3 is a section on the line was of Fig. 2. Fig. 4 is aperspeet-ive view of a memorandunrbook constructed in accordance with our invention, in which the leaves are stitched through the back, as in an ordinary blank-book. Fig. 5 is alongitudinal vertical section through the same, enlarged. Fig.

6 is a modification to be referred to.

Our invention relates particularly to that class of books-such as pocket memorandumbooks, writing-tablets, and the like-which are provided with removable covers, in order that when the leaves are written full or used up they may be replaced by a new book or series of leaves, whereby the cover may be utilized for an indefinite number of books or until worn out.

The object of our invention is to cheapen the construction of books of this description, and to provide a simple and convenient device for holding the book or pack of leaves within the cover in such manner that it can be readily attached or removed when required.

To this end our invention consists in a removable cover, one flap or section of which is provided on the inside near the back with a clasping device composed of a flat spring 5 or springs extending from the edges of the flap in a direction parallel with the back, said spring or springs being bent or doubled over, and having the under portion permanently secured to the fiap,while the upper pertion, which lies directly over the under por- (No mull-1.)

device being arranged at such distance from the back that the wire staples or stitching of the book or block will come into contact with the edge of the clasp to form a stop to determine the position of the book or block with relation to the removable cover-,as hereinafter more particularly set forth.

In the said drawings, A represents the removable cover of a book composed of any suitable material and of any desired shape. The rear flap or section, b, is provided on the 0 inside, in close proximity with the back 0, with a flat metal spring, (I, each end 10 of which is bent or doubled over upon itself, the under portion, 12, being secured in place by a piece of cloth or leather glued thereover, or 7: in other suitable manner, while the upper por- V tions, 10, extend from the edge of the cover inward toward the center directly over the under portion, 12, in a direction parallel with the back 0. Two spring-clasps are thus formed, 50 beneath which is inserted and slid down into place the last leaf or sheet 6 of the block or book B, this last leaf being composed of stout paper or other suitable material, to enable it to be easily inserted beneath the spring- 8 clasps and drawn down into place without being wrinkled or bent out of shape, while the strength of the sheet 6 also prevents it from becoming easily torn or detached from the book B, thus avoiding the liability of the book 0 and cover becoming separated. In Figs. 1 and 2 the sheets of paper are put together in the form of a block, secured together by wire staples or stitching f, below which the block is provided with a row of perforations to facilitate the tearing off of the sheets, the upper portions, 10, of the spring cl being so located that when the last leaf is drawn down beneath them the stitchingf will come in contact with their edges, and thus form a stop for deterroe mining the proper positionof the book with relation to the cover. In Figs. 4 and 5 the sheets or leaves forming the book B are stitched through the back atf in the same manner as an ordinary blank-book, and are not intended to be torn out or detached. In this case the flat spring-clasps are placed closer to the back than those'shown in Figs. 1 and 2, so that when the thick leaf 6 of the book is drawn down between the clasps and the flap b the contact of thestitching through theback with the edges of the said clasps will determine the proper relative position of the book within the cover, as before described. When the block or book has been used up or written full, it can be easily removed from the cover A by drawing the thick leaf 6 out from beneath the spring-clasps, when a new one can be readily inserted in its place, thus enabling the same cover to be used for any desired number of books or blocks until it is worn out.

A removable cover provided with our improved spring-clasps, constructed as described, presents many ad vantages over those heretofore constructed'l'or asimilar purpose, for the reason that'it can be employed for holding a block of sheets as well as a book stitched through the back,whereas the cl asping devices hitherto employed have been adapted for holding the separate pieces, and, if desired, the upper portion of the flat spring (2 may extend entirely across the flap e from one edge to the other, as seen in Fig. 6; but we prefer the construction first described.

What we claim as ourinvention, and desire to secure by Letters Patent, is-

A removable book-cover having one of its flapsor sections provided on the inside near the-back with a flat spring or springs extending inward from the edges in a direction parallel with the back, said spring or springs being bent or doubled over, and having the under portion permanently secured to the flap and'the upper portion located directly over the under portion to form a spring-clasp, in

combination with a book, block, or writingof the clasp to form a stop to determine the position of the book or block with relation to the removable cover,snbstantially as set forth. Witness our hands this 29th day of April,

PETER GLOSS. JAMES A. HEARN.

In presence of- P. E. TESOHEMAOHER, EDWIN F. EDGETT. 

